Fortran编译,max函数出问题,Thisnamedoesnothaveatype,andmusthaveanexplicittype.[MAX]错误2error#6404:Thisnamedoesnothaveatype,andmusthaveanexplicittype.[MAX]相关代码如下：DoubleprecisionPhiXM(-md:Nx+md,-md:Ny+md

Question

Fortran编译,max函数出问题,This name does not have a type,and must have an explicit type.[MAX]
错误 2 error #6404:This name does not have a type,and must have an explicit type.[MAX]
相关代码如下：
Doubleprecision PhiXM(-md:Nx+md,-md:Ny+md)
Doubleprecision MaxPhiXM
Do ix = 0 ,Nx
Do iy = 0,Ny
MaxPhiXM = Max(Abs(PhiXM(ix-3:ix+3,iy)))
End Do
End Do

Answer 1

s name does not have a type,and must have an explicit typ